Question

Ao realizar a fatoração por agrupamento na expressão 4x² + 8x + x + 2 obtemos a expressão fatorada: *

A) (4x + 1).(x + 2)
B) (4x + 2).(x + 1)
C) (4x + 4).(x + 2)
D) (4x² + 1).(4x² + 1)

Answer 1

$\large\boxed{\begin{array}{l}\underbrace{\rm 4x^2+8x}+\underbrace{\rm x+2}\\\rm 4x\cdot(x+2)+1\cdot(x+2)=(4x+1)\cdot(x+2)\\\huge\boxed{\boxed{\boxed{\boxed{\rm\dagger\red{\maltese}~\blue{alternativa~A}}}}}\end{array}}$

Answer 2

4x^2+8x+x+2

4x×(x+2)+x+2

(4x + 1).(x + 2)

$\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{ \huge{ \blue{Alternativa \: (A)}}}}}}}}}}$